Does your cat go crazy with catnip?

My cats go crazy when I bring home a new scratch box or any toy with fresh catnip. It is like they get drunk on it. They lay on top of the scratch box and then they get up staggering. It is so funny. I don't have any pictures of my cats with it yet but I found this one on the internet and it looks like something my cats would do.

My cats love catnip but they don't go "crazy". One of them will take some fresh catnip and lay down and start washing the catnip from stem to tip. Then he takes a nap. The other one like to roll in and on it. Cats also will react the same way to fresh oregano and fresh parsley, just crush the leaves a little to release the scent.

Catnip has never had any effect on any of the cats I've had. It's a pity because I've always wanted to see what all the fuss was about! I wonder if youtube has any clips of cats going crazy for it. Maybe I'll have to do that to satisfy my curiosity.

My cats go crazy for catnip, but they also act like that around oregano. Is oregano in catnip? Why does oregano affect them?
Does anyone else have cats who act strangely around oregano? Mine want to rub against the oregano bottle and then against my shoes, and they attach themselves to my leg and rub against my leg. :P
They continue acting really weird for about an hour after getting a good whiff of oregano.

I have two cats. One it doesn't affect. He just likes to lay in it on his scratch box and eat it. But the other one, hehehhe, it drives her nuts. She will fly though the house and jump up and down like she is bonkers.